Royal Mail’s own Monument Men

Royal Mail had its own railway, Mail Rail, built beneath the streets of London to speed up the transport of mail. Building work commenced prior to the First World War until international hostilities put a halt to electrical installation. But, the empty tunnels quickly found an alternative purpose. The unfinished tunnels were used to store paintings from some of the London museums and galleries until 1919 when work resumed. Mail Rail finally opened in the late 1920s.